Merge KotlinFileStubImpl and KotlinFileStubForIde into KotlinFileStubImpl

as the only difference is additional fields in KotlinFileStubForIde

compiler/psi/cls-psi-stub-builder/src/org/jetbrains/kotlin/psi/stubs/builder/clsStubBuilding.kt

@@ -8,7 +8,6 @@ import com.intellij.util.io.StringRef
 import org.jetbrains.kotlin.builtins.StandardNames
 import org.jetbrains.kotlin.descriptors.SourceElement
 import org.jetbrains.kotlin.psi.stubs.builder.flags.FlagsToModifiers
-import org.jetbrains.kotlin.idea.stubindex.KotlinFileStubForIde
 import org.jetbrains.kotlin.lexer.KtModifierKeywordToken
 import org.jetbrains.kotlin.load.kotlin.JvmPackagePartSource
 import org.jetbrains.kotlin.load.kotlin.KotlinJvmBinaryClass
@@ -22,7 +21,6 @@ import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.protobuf.MessageLite
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.stubs.KotlinUserTypeStub
-import org.jetbrains.kotlin.psi.stubs.builder.*
 import org.jetbrains.kotlin.psi.stubs.elements.KtStubElementTypes
 import org.jetbrains.kotlin.psi.stubs.impl.*
 import org.jetbrains.kotlin.resolve.jvm.JvmClassName
@@ -46,7 +44,7 @@ fun createPackageFacadeStub(
     packageFqName: FqName,
     c: ClsStubBuilderContext
 ): KotlinFileStubImpl {
-    val fileStub = KotlinFileStubForIde.forFile(packageFqName, isScript = false)
+    val fileStub = KotlinFileStubImpl.forFile(packageFqName, isScript = false)
     setupFileStub(fileStub, packageFqName)
     createPackageDeclarationsStubs(
         fileStub, c, ProtoContainer.Package(packageFqName, c.nameResolver, c.typeTable, source = null), packageProto
@@ -60,7 +58,7 @@ fun createFileFacadeStub(
     c: ClsStubBuilderContext
 ): KotlinFileStubImpl {
     val packageFqName = facadeFqName.parent()
-    val fileStub = KotlinFileStubForIde.forFileFacadeStub(facadeFqName)
+    val fileStub = KotlinFileStubImpl.forFileFacadeStub(facadeFqName)
     setupFileStub(fileStub, packageFqName)
     val container = ProtoContainer.Package(
         packageFqName, c.nameResolver, c.typeTable,
@@ -78,7 +76,7 @@ fun createMultifileClassStub(
 ): KotlinFileStubImpl {
     val packageFqName = header.packageName?.let { FqName(it) } ?: facadeFqName.parent()
     val partNames = header.data?.asList()?.map { it.substringAfterLast('/') }
-    val fileStub = KotlinFileStubForIde.forMultifileClassStub(facadeFqName, partNames)
+    val fileStub = KotlinFileStubImpl.forMultifileClassStub(packageFqName, facadeFqName, partNames)
     setupFileStub(fileStub, packageFqName)
     for (partFile in partFiles) {
         val partHeader = partFile.classHeader
@@ -96,7 +94,7 @@ fun createMultifileClassStub(
 fun createIncompatibleAbiVersionFileStub() = createFileStub(FqName.ROOT, isScript = false)
 
 fun createFileStub(packageFqName: FqName, isScript: Boolean): KotlinFileStubImpl {
-    val fileStub = KotlinFileStubForIde.forFile(packageFqName, isScript)
+    val fileStub = KotlinFileStubImpl.forFile(packageFqName, isScript)
     setupFileStub(fileStub, packageFqName)
     return fileStub
 }

compiler/psi/src/org/jetbrains/kotlin/psi/stubs/elements/StubIndexService.kt

@@ -67,7 +67,7 @@ open class StubIndexService protected constructor() {
     open fun deserializeFileStub(dataStream: StubInputStream): KotlinFileStub {
         val packageFqNameAsString = dataStream.readName()
         val isScript = dataStream.readBoolean()
-        return KotlinFileStubImpl(null, packageFqNameAsString!!, isScript)
+        return KotlinFileStubImpl(null, packageFqNameAsString!!.string, isScript)
     }
 
     companion object {

compiler/psi/src/org/jetbrains/kotlin/psi/stubs/impl/KotlinFileStubImpl.kt

@@ -21,8 +21,8 @@ import com.intellij.psi.impl.java.stubs.PsiClassStub
 import com.intellij.psi.stubs.PsiClassHolderFileStub
 import com.intellij.psi.stubs.PsiFileStubImpl
 import com.intellij.psi.tree.IStubFileElementType
-import com.intellij.util.io.StringRef
 import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.psi.stubs.KotlinFileStub
 import org.jetbrains.kotlin.psi.stubs.KotlinImportAliasStub
@@ -31,16 +31,33 @@ import org.jetbrains.kotlin.psi.stubs.elements.KtStubElementTypes.FILE
 import org.jetbrains.kotlin.psi.stubs.elements.KtStubElementTypes.IMPORT_LIST
 import org.jetbrains.kotlin.utils.addToStdlib.firstIsInstanceOrNull
 
-open class KotlinFileStubImpl(
+class KotlinFileStubImpl(
-    jetFile: KtFile?,
+    ktFile: KtFile?,
-    private val packageName: StringRef,
+    private val packageName: String,
-    private val isScript: Boolean
+    private val isScript: Boolean,
-) : PsiFileStubImpl<KtFile>(jetFile), KotlinFileStub, PsiClassHolderFileStub<KtFile> {
+    private val facadeFqNameString: String?,
+    val partSimpleName: String?,
+    val facadePartSimpleNames: List<String>?,
+) : PsiFileStubImpl<KtFile>(ktFile), KotlinFileStub, PsiClassHolderFileStub<KtFile> {
 
-    constructor(jetFile: KtFile?, packageName: String, isScript: Boolean)
+    constructor(jetFile: KtFile?, packageName: String, isScript: Boolean) : this(
-            : this(jetFile, StringRef.fromString(packageName)!!, isScript)
+        jetFile,
+        packageName,
+        isScript,
+        facadeFqNameString = null,
+        partSimpleName = null,
+        facadePartSimpleNames = null
+    )
 
-    override fun getPackageFqName(): FqName = FqName(StringRef.toString(packageName)!!)
+    private fun String.relativeToPackage() = getPackageFqName().child(Name.identifier(this))
+
+    val partFqName: FqName?
+        get() = partSimpleName?.relativeToPackage()
+
+    val facadeFqName: FqName?
+        get() = facadeFqNameString?.let(::FqName)
+
+    override fun getPackageFqName(): FqName = FqName(packageName)
     override fun isScript(): Boolean = isScript
     override fun getType(): IStubFileElementType<KotlinFileStub> = FILE
 
@@ -56,4 +73,34 @@ open class KotlinFileStubImpl(
             it.childrenStubs.firstIsInstanceOrNull<KotlinImportAliasStub>()?.getName() == alias
         }
     }
+
+    companion object {
+        fun forFile(packageFqName: FqName, isScript: Boolean): KotlinFileStubImpl = KotlinFileStubImpl(
+            ktFile = null,
+            packageName = packageFqName.asString(),
+            facadeFqNameString = null,
+            partSimpleName = null,
+            facadePartSimpleNames = null,
+            isScript = isScript
+        )
+
+        fun forFileFacadeStub(facadeFqName: FqName): KotlinFileStubImpl = KotlinFileStubImpl(
+            ktFile = null,
+            packageName = facadeFqName.parent().asString(),
+            facadeFqNameString = facadeFqName.asString(),
+            partSimpleName = facadeFqName.shortName().asString(),
+            facadePartSimpleNames = null,
+            isScript = false
+        )
+
+        fun forMultifileClassStub(packageFqName: FqName, facadeFqName: FqName, partNames: List<String>?): KotlinFileStubImpl =
+            KotlinFileStubImpl(
+                ktFile = null,
+                packageName = packageFqName.asString(),
+                facadeFqNameString = facadeFqName.asString(),
+                partSimpleName = null,
+                facadePartSimpleNames = partNames,
+                isScript = false,
+            )
+    }
 }